“The Fourth Wall,” a yearlong film series sponsored by the Philadelphia art collective Vox Populi, is showing work by Assistant Professor of English and Film Studies Hoang T. Nguyen through the end of October. Multiple and Unending: Videos by Nguyen Tan Hoang, 1999 – 2011 is a 41-minute program of six short films that explore the ways audiovisual technologies mediate identity, history, and memory.

According to the Fourth Wall’s website, Nguyen’s films “ often use existing imagery—found footage considered to represent official records as well as ‘out-of-date’ media detritus—to generate new narratives about race, sexuality, gender, and nationality. Instead of unearthing ‘missing truths’ buried in the past, his videos highlight the determining roles of desire and fantasy in the production of dominant and alternative histories.”

Ngyuyen’s films have been screened at the Museum of Modern Art, the National Museum of Modern Art at the Pompidou Center, the Getty Center, and numerous film and media festivals.

Multiple and Unending is showing through Oct. 30. It is screened in a continuous loop during Vox Populi’s business hours, which are noon-6 p.m., Wednesday through Sunday. The gallery is at 319 N. 11th Street, third floor.